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0xjacky nginx-ui, missing authentication for critical function: 3 records, one defect family

0xjacky nginx-ui has been reported 3 separate times for the same kind of mistake, CWE-306, between 2026-03-05 and 2026-05-04. A defect family is our own grouping of the CVE corpus: every record naming one product and one weakness class, collected so a repeat is visible as a repeat. No public source publishes this, and what this page counts is how often this one product has gone wrong in this one way.

What this page is, and what it is not

The records are public. This grouping is not. No source publishes defect families, so we built them: every record in the corpus sorted by the product an authority named and the weakness class carried with it, 21316 families over 105586 records. This one holds every record that names 0xjacky nginx-ui and carries CWE-306, matched character for character. We show the join because a grouping you cannot check is a grouping you should not cite.

That is 3 filings, between 2026-03-05 and 2026-05-04, landing on the same weakness class in the same product. At this count it is a repeat rather than a pattern, and the roster below is short enough to read in full. This is what we held on 2026-09-20.

A repeat is evidence about where to look. If you are reviewing 0xjacky nginx-ui, the records below say which mistake has already been found more than once, which is the cheapest place a reviewer can start. If you are asking the vendor a question, a count under one weakness class is a better question than any single record is.

What this page cannot tell you is decided by what was joined. A product name and a weakness class settled membership, so those two values are the whole of what the page asserts. Records here may sit in the same line of code or in unrelated parts of the product, and we hold no value that separates those cases. A fixed version named in one record closes that record and says nothing about the others. And nothing here describes anyone's systems, because no value in this family connects a product name to an installation.

2026CVE-2026-27944, published 2026-03-05CVE-2026-33032, published 2026-03-30CVE-2026-42221, published 2026-05-04
3 of the 3 were published in 2026, and the rest are spread over 2 months, so this is one concentrated year with a tail rather than a steady rate.

The names the authorities used

One spelling, used by every authority that filed one of these records: 0xjacky nginx-ui.

These records name more than one weakness class each. All 3 carry CWE-306, which is what this family was grouped on, and one of them also names CWE-311, missing encryption of sensitive data. The roster below shows what each record names; both readings are the record's own, filed together by the same authority.

Family membership: held values. Joined on the product and weakness class the assigning authorities wrote, with no model involved.

What the records offer

No record in this family publishes a fixed version in held sources.

The earliest was published 2026-03-05 and the latest 2026-05-04. That span is how long this product kept producing this weakness, not how long any one record took to fix.

What this page does not cover

This is a family of records that read alike. It is not a shared vulnerability, not an inventory, and not a statement that one fix closes the rest. Each record's own state, its own dates and its own receipts are on its own page.

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

CVE-2026-27944Nginx UI: Unauthenticated Backup Download with Encryption Key DisclosureCWE-311: Missing Encryption of Sensitive Data
CVE-2026-33032Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx TakeoverCWE-306: Missing Authentication for Critical…
CVE-2026-42221nginx-ui: Unauthenticated First-Run Installer Allows Remote Initial Admin ClaimCWE-306: Missing Authentication for Critical…

3 records, read from the index as it stood on 20 Sep 2026. Every row opens the record it names, and every value on that record opens its own receipt.

Everything on this page is free. Public data. Withholding it protects nothing.